Fail safe detector in a cardiac monitor

Details Fail safe detector in a cardiac monitor Fail safe detector in a cardiac monitor

1977-04-27

1978-09-19

Gruber, Felix D.

Boots, shoes, and leggings

128 205A, 340516, 340573, 340635, 364417, G08B 2100

Patent

active

041158644

ABSTRACT:
A fail safe detector in a cardiac monitoring system provides an alarm to indicate failure of the system to respond to cardiac waveforms supplied thereto from cardiac waveform sources. A time out circuit will produce the alarm if not periodically reset by pulses produced in response to measurement of cardiac waveforms. Means are provided for sensing whether cardiac waveforms are received from the sources to provide an alternate means of triggering periodic reset signals when no waveforms are received from the sources to prevent false alarms.

REFERENCES:
patent: 2756409 (1956-07-01), Lubkin
patent: 3315246 (1967-04-01), Huffman et al.
patent: 3320440 (1967-05-01), Reed
patent: 3390387 (1968-06-01), Hugenholtz
patent: 3612907 (1971-10-01), Braunholtz
patent: 3653018 (1972-03-01), Budrys
patent: 3691548 (1972-09-01), Heneghan
patent: 3735272 (1973-05-01), Nyswander
patent: 3749897 (1973-07-01), Hirvela

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